YOU SAID:

This year I've got to be smart

INTO JAPANESE

今年は賢くなければなりません

BACK INTO ENGLISH

This year you have to be smart

INTO JAPANESE

今年は賢くなければならない

BACK INTO ENGLISH

This year must be smart

INTO JAPANESE

今年はスマートでなければなりません

BACK INTO ENGLISH

This year must be smart